Omega-level mutant

Mutant
Publication information
Publisher	Marvel Comics
First appearance	X-Men #1 (September 1963)
Created by	Stan Lee Jack Kirby
Characteristics
Place of origin	Earth
Notable members	X-Men X-Factor X-Force Dark X-Men New Mutants Brotherhood of Mutants Acolytes Morlocks

In American comic books published by Marvel Comics, a mutant is a being (usually otherwise human) who possesses a genetic trait called an X-gene that allows the mutant to naturally develop superhuman powers and abilities. Human mutants are considered to be of the subspecies Homo sapiens superior or simply Homo superior, an evolutionary progeny of Homo sapiens, and are considered the next stage in human evolution, although whether this is true or not is a subject of much debate in the Marvel Universe.

Unlike Marvel's mutates, which are characters who develop their powers only after exposure to outside stimuli or energies (such as the Hulk, Spider-Man, The Fantastic Four, and Absorbing Man), mutants are those whose mutations are pre-natal, and whose powers typically manifest at puberty.

A March 1952 story in Amazing Detective Cases #11 called "The Weird Woman" tells of a woman describing herself as a mutant who seeks a similarly superhuman mate.

Roger Carstairs, a mutant who can create illusions, is shown in Man Comics #28, dated September 1953.

A character with superhuman powers, born from a radiation-exposed parent, was seen in "The Man with the Atomic Brain!" in Journey into Mystery #52 in May 1959; although not specifically called a "mutant", his origin is consistent with one.

A little-known story in Tales of Suspense #6 (November 1959) titled "The Mutants and Me!" was one of the first Marvel (then known as Atlas) stories to feature a named "mutant".

...
Wikipedia